Stop motion



C. W. HUBBARD STOP MOTION June 22 ,1926. 1,589,648

Original Filed May 19, 1923 2 Sheets-Sheet 1 lnv enTo1-.

Charles W. Hubbard byWMk/QMJ Aflys.

c. w. HUBBARD STOP MOTION June 22 1926. 1,589,648

Original Filed ay 1 1923 2 Sheets-Sheet 2 lnvehToT:

Charles W.Hubburd WJIW Patented June 22, 1926.

UNITED stares ages-T new cHARnns W. HUBBARD-OF wE'sTomMAssAoHnsnTTs:

s'ror Mow-Ion Application filed May 19; 1923,8eria1 No. 640,11}. Renewed fiovember 26, 1'92'5.

This invention relates to stop motions for drawing frames, rovlng frames or machines of like nature and it has for its general through the stop motion rather than retards; it and which has, various othergadvantageousi features all as will be more fully hereinafter set forth,

In ordertoig ive an understanding; of the invention-I have illustratedin the drawings" aselected embodiment of the invention whichwill now be described aft-er Whichthe novel features will be pointed out in the appended claims. p h

Fig. 1 is a plan view of a portion of a roving machine showing. my improved stop Fig. 2 is an enlarged section on the line 2--'2, Fig. 1; v p V Fig; 3 is a similar vievvshowingthe sliver broken and the stop'motion in operation;

Fig. 4 isa' diagrammatic View illustrating the application of my invention to a drawin; frame. 7,

Inasmuch as the invention relates simply to the stopmotion I have not illustrated in the drawings a complete drawing fraine or roving; frame and in fact have only shown a' suflicient portion of such a machine to enable the invention to be understood. V In Fig. 4 some of the essential parts of a drawingframe are illustrated diagrammatically,-60 being thecan fromvvhich the sliver 50is Withdrawn, 61 beingthe usual retaining rolls to Which the sliver is delivered from thecan and'62 being the drawing rolls through which the sliverpasses and which operate "to pertornithe vdraavin'gl\ly;4.improved stop motion is, situated be; tween the can orreceptacle-' 60 a and 1 the; re; t'ainingrolls =61, and itaets on thefsliver; as itzisdeliveredfroni thecan 60. The operative parts ofthemachine are supported on a-snitable framed; a po1'tion' i'o 11 ly 0t wl 'e'l isshown in'the dravvings and siiehi operat ve. parts are driven throu gh'a suitable clutehsor driving: belt which; isj controlled by a;- ship'- piiig lever that is held in operative- 13052191}? ya catch characterrf:

against the pressure-10f a spring" all? as usrial in machines of th-i \Vhen the catch' is releasdthe sprineeopea atestliesh ppr:lever tothroii the hel dirt the. imseipuiiey' or tod-isen'gage the amt.- This releaseof the'c'atch is'efiectedby acoiiti'ollin g rodjall asusual and which isherein shown at' 2, saidhrod normally having the position shoivn in Fig. 2 but: being movable into the position sh'oi'vn in Fig. 8 tliereby to release the catch and permit; the spring to shift the belt tofthe" loose pu ley. k v My" improved stop motion comprises th mtgro s-ptS eree, 4 this from eabh other and,:a'rejsi' l" i h f dv n 6 h ith' jf 1 l .v a 61 ste n position setthait't e'fsli, rapt-se s v th sefrolls or shafts it' trajvelsj from the cans to the retniimgeou 61. These rolls or shafts nesttwn as" supported in suitable brackets-6 securedtor the.frameaiid means are provided rise positively driving them? I v 4 I l The means herein for this; p'u ipdse comprises gears Q on the, rolls 3 and 4 and both meshing ivithan inteiane'dt' ate driving" gear 10,, The rolls are positively driven from-theshaft of theretain,- ing rolls 61 and at the same' surface speed; the result ofw'hich is that thepdsitive driving rolls 3 and 4 help to lift the sliver out of tl1e ean. h n; (V

These rolls "3 and 4 extend the fulllength; of the machine so that each individual sliver 5 passes over the rolls as shownlin Fig; 2. 11 indicate guides as'sociated' with the roll 3 and acting as guides for the sliver ends to hold them in proper position.

Clo-operating with; the rolls 3: and 41 are a series o f: eight rolls 12;,there being one such Weight roll for each sliver. 7 These Weight rolls are relatively short and each has a diameter equal to the distance between the rolls;3 and 4.so that ii the vs eight rolls are unsupported they can; pass freely etw nz eirolls- 3audit T es l e roll are apps-ed b tw en .rq sf @1 14: y: thep fs ene Of.-t e i5, @011 s e: ei ient i g er ilhqli l 3, 1 lin nath i 12- an iv en he latte enidthe ll, 41 16 h nee. their ef ine o ler-61 nd drawing; twisting; and Wi-r fdin-g'. de

vices?- the 'i'aleaiif 1 f e 6. :11am: hsiweigl t mo t- :2 1 9117 d nld t ig heit a lienc'i' e g as,

tact the corresponding weight roll 12 will be supported in the position shown in Fig. 2 but if the sliver runs out and is withdrawn from between the rolls 3 and 12 then the support for the weight roll 12 is removed and said roll will drop between the rolls 3 and at as shown in Fig. 3.

Means are provided whereby when any weight roll 12 thus drops between the roll: 3 and at the controlling rod 2 will be actuated to stop the machine. The means I have provided for this purpose comprises a rock shaft 13 extending longitudinally of the frame and having at one end an arm 141 adapted to engage a collar 15 carried by the rod 2 so that turning movement of the shaft 13 anti-clockwise in Fig. 2 will move the controller rod 2 to the left and release the spring acting on the shipping lever thereby to stop the machine. v

"The rock shaft 13 has rigid therewith a plurality of arms 16 which carry troughs or receptacles 17 that are situated beneath the rolls 12 and are adapted to receive the latter when they drop through the space between the rolls 3 and a. The counter-shaft 13 is counterbalanced by a counterweight 18 which is hung on an arm 19 extending from the shaft and said weight is such that it just overbalances the weight of the arm 16 and trough .17 so that normally the parts are in the position shown in Fig. 2. Since the shaft 13 is just counterbalanced a slight downward pressure on the ends of the arms 16 will be suilieient to turn the shaft 13 anti-clockwise and thus shift the controlling rod 2 so as to release the spring and to stop the machine.

The weight rolls 12 are constructed so that the weight of any one of the rolls is sufiicient for this purpose. Therefore, if any sliver runs out the corresponding weight rolls 12 will drop between the rolls 3 and -l into the trough 17 thereby turning the rock shaft 13 as shown in Fig. 3 and operating through the arm 14 to actuate the controller rod 2 and stop the machine.

The machine is so arranged that. the distance between the stop motion and the back-' retaining roll 61 is sutlicient to permit the machine to come to restafter the stop motion has acted and before the broken end of the sliver which has been drawn through the stop motion has reached the retaining rolls so that after the machine comes to rest there will always be a sufficient length of the sliver projecting from the retaining rolls to permit the sliver to be readily pieced up. After the stop motion has operated the weight roll 12 is removed from the trough, the sliver is pieced and then the weight roll is replaced in position on the sliver.

As stated above the rolls 3 and 4 are driven atoa surface speed equal to that of the retaining -rolls' 61 so that said rolls as- 1,5saees sist in lifting the sliver from the can and feeding it to the drawing rolls.

The apparatus herein illustrated is simple in construction but positive and efficient in operation.

The weight rolls 12 are held from movement longitudinally of the frame or in the direction of their axis by means of positioning arms 19, 20, the arms 19 being secured to a rod 21 carried by the bracket 6 and the arms 20 being carried by said brackets. These positioning arms retain the rolls 12 in proper position and will allow them to rotate freely and permit them to freely drop when the sliver runs out or is withdrawn between the rolls 8 and 4- and the weight roll 12 either because of exhaustion from the can 60 or because of breakage.

I claim:

1. In a stop motion, the combination with a pair of separated rolls over which the sliver passes, of means to rotate said rolls, a weight roll having a diameter equal to the distance between said driven rolls and resting on and supported by the sliver between said driven rolls whereby when the sliver runs out or breaks said weight roll will drop between said driven rolls,'a rock shaft having arms, a trough supported by said arms and situated to receive the weight roll when he latter drops, and a controlling rod actuated by turning movement of the shaft due to the dropping of a weight roll.

2. In a stop motion, the combination with a pair of separated rolls over which the sliver passes, of means to drive said rolls, a plurality of weight rolls each having a diameter equal to the distance between said driven rolls and each resting on and supported by a sliver between said driven rolls, whereby when any sliver runs out or breaks the corresponding weight roll will drop between the driven rolls, a controller rod and means to actuate the controller rod by any weight roll when it drops between the driven rolls.

3. In a stop motion, the combination with a pair of separated rolls over which the sliver passes, of a weight'roll having a diameter equal to the distance between said separated rolls and resting on and supported by the sliver between said rolls, whereby when the sliver runs out or breaks the weight roll will drop between the separated rolls, means to rotate the first-named rolls at a surface speed equal to that at which the sliver is drawn thereover, said rolls giving rotation to the weight roll by frictional contact, a controller rod by which the machine is stopped, and means to actuate the controller rod by a weight roll when it drops between the separated rolls.

4. In a stop motion, the combination with a pair of separated rolls over which the sliver passes, of a weight roll having a diameter equal to the distance between said separated rolls and resting on and supported by the sliver between said rolls, whereby when the sliver runs out or breaks the weight roll wil drop between the separated rolls, means to rotate the first-named rolls at a surface speed equal to that at which the sliver is drawn thereover, said rolls giving rotation to the Weight roll by frictional con tact, a controller rod by which the machine is stopped, a rock shaft, arms carried there by, troughs supported by the arms and situated to receive the weight roll when it drops, and means to shift the controller rod by the turning movement of the rock shaft due to a weight roll being received in the trough.

5. In a roving or similar machine having a feed can from which the sliver is withdrawn and positively-driven back-retaining rolls for drawing the sliver from the can, the combination with said can and retaining rolls, of a stop motion comprising a pair of supported rolls rotating at the same surface speed as the retaining rolls and situated between the can and said retaining rolls and over which the sliver passes, a weightroll having a diameter equal to the distance between the separated rolls and resting and supported by the sliver between said rolls, whereby when the sliver runs out the weight roll will drop between the driven rolls, and a controller rod actuated by the weight roll when the latter drops.

In testimony whereof, I have signed myname to this specification.

CHARLES l V. HUBBARD. 

